weblogic and jdbc

I'm trying to create a datasource in weblogic 9.2. I get to a screen where I can test my datasource, but I got an exception thrown due to an inability to find the mysql*.jar file containing the driver. Can anyone tell me where this file goes? Presently, I think I moved it to BEA_HOME/common/lib

I am running weblogic on a dell 1721 laptop with Ubuntu 7.X OS. Are there any environment variables that need to be set in my .cshrc file?